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Psymon

4 years ago

It wants to know where the graph has a slope of 0 basically. When you set f'(x) = 0, youre often finding humps in the graph (because thats where the slope would be 0). So like this:
|dw:1378632385385:dw|
On my little example, there are 4 spots where the slope of the graph at that point would be 0. Those are the points that f'(x) = 0 would be helping you find.